Burst asymmetric/unidirectional error correcting/detecting codes

Codes capable of correcting burst asymmetric and unidirectional errors are described. The proposed codes need approximately b+log/sub 2/k check bits to correct a burst of b asymmetric/unidirectional errors, where k is the number of information bits. In most cases, the proposed codes require fewer check bits than the equivalent burst symmetric error-correcting codes. The optimality of the codes is also considered. In addition, efficient codes capable of detecting double burst unidirectional errors are given.<>